How can I be sure my acid has degraded or I just became more tolerant? [I Love Lsd]

Back in 2018 I had a good job and invested in a large amount of lsd because I thought it was a godsend. But now I take 3 tabs to get the same effect as 1 in 2018. Mind you, I had over 100 tabs since then. The guy I go to has deals. $10 a tab but $8 tab if you buy more than 10 at once. 🤔

I am the kind of person that is paranoid and I but everything I’m excess due to fear of scarcity. I hoard food, beauty supplies, etc because that is who I am.

I am down to my last 2 strips of 15.

I did everything right, I think? Air tight sealed baggies, kept in a steal tin, in a dark drawer, in a cold room (my basement).